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MHH-02-1999 0831 SHERWOOD LABS 2096672581 P.06 <br /> Sherwood <br /> Labs 6071 NORTH LANDER AVENUE <br /> P,0_ BOX 937 <br /> # C O R P O R ,4 T l d N <br /> HIL MAR,CALIFORNIA 95324 <br /> �. 031OW99 QUALITY CONTROL REPORT DHS Certification#1400 <br /> Volatile Analyses Nancy Biedenweg, Lab Director <br /> Client; GEOLOG#GAL TECHNICS, INC. Date Received: 02/25199 <br /> 2741 RIVER RD. Date Started: : 02126/99 <br /> MODESTO, CA 95351 Date Complete: 03101/99 <br /> +-► ATTN: RAY KABLANOW <br /> Lab Re ort* H9022602 Lab Sample 9s: PHOO21387-1396 <br /> Linearity Check: <br /> BTEX Benzene 0.9997 TPH Gasoline 0,9998 <br /> Toluene 0.9994 TPH Diesel NIA <br /> L. Ethyl Benzene 0.99% Motor ail NIA <br /> Xylenes 0.9976 DIELECTRIC OIL NIA_ <br /> MTBE 0.99$4 <br /> Std% Repeatability MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX 104 101 100 103 106 <br /> TPH Gasoline 101 TPH Diesel NIA <br /> DIELECTRIC OIL NIA TPH Motor Oil NIA <br /> �. Matrix Spike Recoverlesj MS MSD RPD <br /> MTBE 112 110 1.8 <br /> BTEX Benzene 112 104 7.4 <br /> �. Toluene 110 107 2.8 <br /> Ethyl Benzene 100 100 0.0 <br /> Xylenes 110 111 0.9 <br /> TPH Gasoline 105 100 4.9 <br /> TPH Diesel WA NIA _ ERR_ <br /> Method Blank MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX � c3 <3 u - '=3 u <3 u <br /> TPH Gasoline <1 TPH Diesel= NIA TRPH(416.1) N/A <br /> 4. Lab Control Sample% Recove ry EPA Performance Acceptance Range <br /> BTEX Benzene 101 _ 73.3 - 126 <br /> Toluene 102 73-0 - 118 <br /> LN Ethyl Benz 93 71.2 - 118 <br /> Xylenes 97 71.6 - 120 <br /> TPH Gasoline 1127 68.0 - 150 <br /> TPM Diesel NIA 78.3 - 136.0 <br /> NWM✓ TRPH (418.1) NIA NIA <br /> 16.o OFFICE, (200) 687-5256 . FAX: (209) 967.2581 . BBS: (209.) 667-4119 <br />